Release safety-hook.



W. & A. G. E. BROWN & I. B. MERRY.

RELEASE SAFETY HOOKP APPLICATION FILED MAR. 12, 1913.

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ATTOPNfYS THE NORRIS PETERS cg PHOTO-LITHO., WASHING rON4 D. C.

UNITED STATES PATENT OFFICE.

WILLIS BROWN, ALEXANDER CHARLES EDGAR BBOVV IN, AND THOMAS BODEN MERRY,

0F ADELAIDE, SOUTH AUSTRALIA, AUSTRALIA.

RELEASE SAFETY-HOOK.

Specification of Letters Patent.

Application filed March 12, 1913. Serial No. 753,744.

This invention has been especially devised for use with boat clavits forsecurely holding and quickly releasing ships boats, but it may be usedin connection with general lifting and other purposes where hooks arerequired.

Our improved hook comprises two side members, a shackle, a spring, and alocking ring, and in order that it may be clearly understood we willdescribe the same with reference to the accompanying drawings in which-Figures 1 and 2 are front and side views of our safety hook closed, thetwo members of the hook being held together by the locking ring. Fig. 3is a front view of our safety hook closed, the locking ring having beenraised and the two members being held to,- gether by the seamans hand,or by the sus pended weight. Fig. 4 is a front view of our safety hookopened. Fig. 5 is a cross section on line a Z) of Fig. 1 just above thelocking ring.

A and B are the two side members which form the hook proper and whichare pivoted together at their upper ends and to the shackle C by meansof the bolt D forming a knuckle joint. Their lower ends are turnedinwardly and halved together and overlapped, the point of each passingbeyond the center line of the hook and such overlapping portion beingtapered off as to its upper edge to allow instantaneous release of thering E when the two members are released and the spring H is allowed toopcrate.

. The shackle C permits the hook to be secured to a rope whereby thehook is suspended. The ring E is connected to the boat or other weightto be carried by the hook.

The spring H is housed between the side members in suitable sockets orrecesses therein just below the knuckle joint, and

when allowed'to operate forces the two members apart.

The locking ring K encircles the side members A and B and, when innormal position, holds them together against the pres sure of thespring. Upon the two side members A and B are stop lugs L and M whichgriimit the downward movement of the ring Upon the top side of the ringK is pivoted a catch P the edge of which engages small notches a. Z) inthe face of the side members A and B and prevents the accidental raisingof the ring.

Normally, as when a boat is being lowered, the several parts are in theposition shown in Figs. 1, 2 and 5, the locking ring K holding the twoside members A and B of the hook together. When the seaman receives theorder to stand by he seizes the hook with his hand, and first turns thecatch P upon its pivot from the position shown in Fig. l to that shownin Figs. 3 and 4, so r leasing the ring K, and then slides the ringupward and holds the two side members together with his hand as shown inFig. 3.

As soon as the boat is waterborne and the seaman receives the order tolet go he merely opens his hand and the spring H throws the membersapart opening the hook and releasing the ring E with the boatinstantaneously.

It is of course to be understood that, when used in connection with aboat, one of our hooks is used at each end of the boat.

Having now fully described and ascertained our said invention and themanner in which it is to be performed we declare that what we claim is-I 1. In an improved release safety hook having two side members pivotedtogether and to a shackle at their upper ends and having their lowerends turned inwardly and halved together and overlapped, a

spring housed between the said side members and tending to open them,and a looking ring encircling the said side members and slidable thereonso that when in its lower position the side members are held closed butwhen in its upper position the Patented Sept. 8, 1914.

.1 notch "intermcc faces 01'? the side members when the locking ring inits lower position.

:5. 5i. device it the character described,

comprising s pair of pivoted and spring pressed members havingsubstantially hookshaped ends adapted to overlap one another, a rinireel v slideble on said members, and a member mounted on the ring andadapted to project between and into engagement with the said members. I

3. A device of the character described, comprising i pair of hinged sidemembers formed with overlapping hook ends, each of said side membersbeing formed With a. V te itslength and with a stop adjacent c \lQinotch, spring means acting on said side members for tending to open thesame, an encircling loop member Copies of this patent may be obtainedfor five cents each, by address-in designed to engage said side membersand rest wminst said stops for holding said side 20 1n.em;;ers together,and e pivotully mounted catch formed with e projection adapted to litinto the notches in said side members for locking the said loop memberagainst move ment 1 in testimony that We claim the foregoing ourinvention We have signed ounnemes in the presence of two subscribingWitnesses this 5th day of February, 1913.

WILLIS BROWN.

illiEXi NDER GHAELES EDGAR BROWN;

TllOl IAb BODEN MERRY;

n esses the jfiemsiissioner Weshin gton, 1). C3

